<template>
    <div>
        <div class="user-info-head" @click="editCropper()"><img v-bind:src="options.img" title="点击上传头像" class="img-circle img-lg" /></div>
        <el-dialog :title="title" :visible.sync="open" width="800px" append-to-body @opened="modalOpened"  @close="closeDialog()">
            <el-row>
                <el-col :xs="24" :md="12" :style="{height: '350px'}">
                    <vue-cropper
                            ref="cropper"
                            :img="options.img"
                            :info="true"
                            :autoCrop="options.autoCrop"
                            :autoCropWidth="options.autoCropWidth"
                            :autoCropHeight="options.autoCropHeight"
                            :fixedBox="options.fixedBox"
                            @realTime="realTime"
                            v-if="visible"
                    />
                </el-col>
                <el-col :xs="24" :md="12" :style="{height: '350px'}">
                    <div class="avatar-upload-preview">
                        <img :src="previews.url" :style="previews.img" />
                    </div>
                </el-col>
            </el-row>
            <br />
            <el-row>
                <el-col :lg="2" :md="2">
                    <el-upload action="#" :http-request="requestUpload" :show-file-list="false" :before-upload="beforeUpload">
                        <el-button size="small">
                            选择
                            <i class="el-icon-upload el-icon--right"></i>
                        </el-button>
                    </el-upload>
                </el-col>
                <el-col :lg="{span: 1, offset: 2}" :md="2">
                    <el-button icon="el-icon-plus" size="small" @click="changeScale(1)"></el-button>
                </el-col>
                <el-col :lg="{span: 1, offset: 1}" :md="2">
                    <el-button icon="el-icon-minus" size="small" @click="changeScale(-1)"></el-button>
                </el-col>
                <el-col :lg="{span: 1, offset: 1}" :md="2">
                    <el-button icon="el-icon-refresh-left" size="small" @click="rotateLeft()"></el-button>
                </el-col>
                <el-col :lg="{span: 1, offset: 1}" :md="2">
                    <el-button icon="el-icon-refresh-right" size="small" @click="rotateRight()"></el-button>
                </el-col>
                <el-col :lg="{span: 2, offset: 6}" :md="2">
                    <el-button type="primary" size="small" @click="uploadImg()">提 交</el-button>
                </el-col>
            </el-row>
        </el-dialog>
    </div>
</template>
<script>
import { VueCropper } from "vue-cropper";
import store from "@/store";
import {uploadAvatar} from "../../../api/system/user";

export default {
        name: "UserAvatar",
        components: { VueCropper },
        props: {
            user: {
                type: Object
            }
        },
        data() {
            return {
                // 是否显示弹出层
                open: false,
                // 是否显示cropper
                visible: false,
                // 弹出层标题
                title: "修改头像",
                options: {
                    img: store.getters.avatar, //裁剪图片的地址
                    autoCrop: true, // 是否默认生成截图框
                    autoCropWidth: 200, // 默认生成截图框宽度
                    autoCropHeight: 200, // 默认生成截图框高度
                    fixedBox: true // 固定截图框大小 不允许改变
                },
                previews: {}
            };
        },
        methods: {
            // 编辑头像
            editCropper() {
                this.open = true;
            },
            // 打开弹出层结束时的回调
            modalOpened() {
                this.visible = true;
            },
            // 覆盖默认的上传行为
            requestUpload() {
            },
            // 向左旋转
            rotateLeft() {
                this.$refs.cropper.rotateLeft();
            },
            // 向右旋转
            rotateRight() {
                this.$refs.cropper.rotateRight();
            },
            // 图片缩放
            changeScale(num) {
                num = num || 1;
                this.$refs.cropper.changeScale(num);
            },
            // 上传预处理
            beforeUpload(file) {
                if (file.type.indexOf("image/") == -1) {
                    this.msgError("文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。");
                } else {
                    const reader = new FileReader();
                    reader.readAsDataURL(file);
                    reader.onload = () => {
                        this.options.img = reader.result;
                    };
                }
            },
            // 上传图片
            uploadImg() {
                this.$refs.cropper.getCropBlob(data => {
                    let formData = new FormData();
                    formData.append("avatarfile", data);
                    uploadAvatar(formData).then(response => {
                        this.open = false;
                        this.options.img =response.data.imgUrl;
                        console.log(this.options.img)
                        store.commit('SET_AVATAR', this.options.img);
                        this.msgSuccess("修改成功");
                        this.visible = false;
                    });
                });
            },
            // 实时预览
            realTime(data) {
                this.previews = data;
            },
            // 关闭窗口
            closeDialog() {
                this.options.img = store.getters.avatar
                this.visible = false;
            }
        }
    }
</script>

<style scoped lang="scss">
    .user-info-head {
        position: relative;
        display: inline-block;
        height: 120px;
    }
    .user-info-head:hover:after {
        content: '+';
        position: absolute;
        left: 0;
        right: 0;
        top: 0;
        bottom: 0;
        color: #eee;
        background: rgba(0, 0, 0, 0.5);
        font-size: 24px;
        font-style: normal;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        cursor: pointer;
        line-height: 110px;
        border-radius: 50%;
    }
</style>
